PSTU may refer to: Patuakhali Science and Technology University, a university in Bangladesh Partido Socialista dos Trabalhadores Unificado (United Socialist Workers' Party), a Brazilian political party Partido Socialista de los Trabajadores Unificado (United Socialist Workers' Party (Argentina)), an Argentine political party Perm State Technical University, a university in Perm, Russia Potti Sreeramulu Telugu University, a university in India